Saffron-robed Buddhist monks chanted as onlookers gazed silently across a bridge piled with the shoes and clothing left by the victims of a stampede.

Cambodia searched for answers on Tuesday a day after a stampede killed at least 375 people on a suspension bridge.

Cambodia is cracking down on a raw ingredient for the club-drug ecstasy by wiping out stocks of an oil made from the roots of a rare rainforest tree.